R Notebook

pacman::p_load(rjson, jsonlite, DT,  RJSONIO)

cannot open URL 'https://cran.rstudio.com/bin/macosx/el-capitan/contrib/3.5/PACKAGES.rds': HTTP status was '404 Not Found'trying URL 'https://cran.rstudio.com/bin/macosx/el-capitan/contrib/3.5/DT_0.8.tgz'
Content type 'application/x-gzip' length 912912 bytes (891 KB)
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downloaded 891 KB

The downloaded binary packages are in
    /var/folders/13/mm274g150871sqv2f1h5xhcr0000gn/T//Rtmp2Mdcmm/downloaded_packages

DT installed
package ‘DT’ was built under R version 3.5.2

movies_metadata = read.csv("data-raw/movies_metadata.csv")

head(movies_metadata)

test <- fromJSON(as.factor(movies_metadata$belongs_to_collection), flatten=T) 

Error in (function (classes, fdef, mtable)  : 
  unable to find an inherited method for function ‘fromJSON’ for signature ‘"factor", "missing"’